Grate



(No Model.)

C. BRANDT.

l GRATE. No. 522190. l Patented July 3, 1894.

u@ .QN S

wi zsm UNITED STATES PATENT CEFCE.

CARL BRANDT, OF CEDAR FALLS, IOVA.

,GRATE.

SPECIFICATION forming partof Letters Patent 1\.To. 522,190,v dated July3, 189'4. Application filedOctoher 20,`1S92. Serial No.449,452. (Nomodel.)

A To all whom t may con/cern,.-

Beit known that I, CARL BRANDT, a citizen of the United States, residingat Cedar Falls, in the county of Black Hawk and State of Iowa, haveinvented a new and useful Grate,

of which the following is a specification.-

My invention relates to improvements in that class of stove and furnacegrates capable of being shaken and a portion orall of the tire removedor dumped into the ash-pit by the partial or complete movement of one ormore sections; and the objects'. in view are lto improve theirconstruction and operation, to provide for the accumulation of the ashesat the center of the grate, and to so adapt and arrange the parts as toenable cinders and clinkers to be removed from the grate-bars orfingers.

Further objects and advantages of my invention will appear hereinafterand the novel features thereof will be particularly pointed out in theappended claims.

` dered, as shown at c, to fit in the rabbet ofV The grate-support, A,which is annular ini shape and is rabbeted to form a bearing for the.grate proper, is provided with lateral arms, a a, and the rear arm, a',which are upturned' at their terminals and perforated, to enable them tobe attached to the walls of the stove or furnace. n

Ihe grate proper, B, is annular in shape and comprises, essentially, aring or web, C, from which project inward andoutward extending ingers.The ring or web is shoulthe support, A, the outward extending, orexterior' lingers, D, are curved upward toward their terminals, and theinward extending or interior fingers, E, are curved downward `towardtheir terminals. All of the fingers are radially-disposed. The upwardcurvature of the exterior fingers and the downward curva-- ture of theinterior fingers give the grate a dish-shape which has the effect ofcausing the ashes, dac., to gravitate toward the center of the grateandescape, between the fingers E, while the incandescent fuel is supportedby the grate above the rotatory bars. This operation'and disposition ofparts is attained4 tions are turned, to intermesh with or pass betweenthe Vinterior fingers ofthe annular section. The stems or spindles, H,of the rotary sectionsare mounted at their'rear ends in bearings in thecasting, I, which may be secured to the under surface of the supportingring, as shown, or may be attached to the wall of the stove" or furnace,and at their front ends in bearings in the casting, I', which isvpreferably secured to' the stove or furnace and, therefore, is showndetached in the` drawings.

It will be noted that by arranging the radial ingers, K, of the rotarysections in triplicate series, as above described, the upper sides ofsaid sections, in either of their three operative or normal positions,are concave. The spindles of the rotary sections are provided with twinintermeshing gears, L L, whereby both sections may be operated by themanipulation of either, and whereby, when one section is adjusted theother is necessarily brought to its ,operative or normal position.Furthermore, by thus gearing the spindles of the rotary sectionstogether, they are always turned in opposite directions, namely, eithertoward or from each other, whereby when one of the spindles is agitatedbyy partially turning in opposite directions, the agitation of the fireis accomplished in an eiective manner, especially from the fact that ateach oscillation of the rotary sections their outer fingers rise betweenthe interior fingers of the annular sectionf vThe annular section isrevoluble and is provided with means such as the parallel lugs S IOO anyordinary shaking device.

Changes in the form, proportion and the minor details of constructionmay be resorted to Without departing from the principle or sacrificingany of the advantages of this invention.

Having th us described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a device of the class described, the combination withan annularsupport, of an annular grate-section made in a single piece andcomprising a ring or web C, exterior fingers D extending around theentire upper edge of the web and inclined upward toward their outer endsand having concaved inner sides, and interior fingers E arranged aroundthe entire lower edge of the web andinclin ed downward toward theirinner ends and having convex upper sides, both sets of fingers beingradially disposed and the outer fingers joining with and forming aregular compound curve with the inner lingers, whereby the grate isgiven a dished-shape, and rotary sections arranged beneath the spaceinclosed by the annular grate section, substantially as specified.

2. In a device of the class described, thecombination with an annularrotatable grate-section comprising a ring or web C, and exterior andinterior fingers D and E curved respectively upward and downward towardtheir free terminals, and arranged in a continuous series around theentire upper and lower edges of the web, and rotary sections arrangedbelow the plane of the terminals of the interior fingers and beneath thespace inclosed by the annular section, and provided with radial fingersspaced to align with the intervals between the said interior teeth ofthe annular section, all substantially as specified.

3. An annular grate-section comprising a ring or web C, integralexterior fingers D which curve upward toward their outer ends and haveconcave upper sides, and integral interior arms E which curve downwardtoward their inner ends and have convex upper sides, the upper sides ofboth exterior and interior fingers being flush with the upper surface ofthe ring or web C, in combination with movable or rotary bars arrangedin the space inclosed by the annular grate-section substantially asspecified.

4. The annularvrabbcted grate support A, in combination with therevoluble grate B, annular in shape, and shouldered to fit in the rabbetof the support, said grate having exterior fingers D and interiorfingers E both sets being radially disposed and the outer fingersjoining with and forming a regular compound curve with the inner fingerswhereby the grate is given a dish shape which has the effect of causingthe ashes and cinders to gravtate toward the center, and the twin rotarysections C arranged parallel with each other in the space inclosed bythe annular grate section and below the plane of the terminals of theinterior fingers, and provided with a triplicate series of fingers whichare adapted to pass between the interior fingers, the triplicate seriesof tngers on the rotary sections providing a concaved upper side for therotary sections in either of their three operative positions,substantially as specified.

In testimony that I claim the foregoing as my own Ihave hereto affixedmy signaturein the presence of two witnesses. CARL ERAND'P.

Vtnesses:

Lili/[FEAR KNAPP, W. A. DUGANE.

